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43 <br /> c. Accessory structures shall be constructed and placed on the building site so <br /> as to offer the minimum resistance to the flow of floodwaters; <br /> d. Accessory structures shall be firmly anchored according to Section 6.32.1; <br /> e. All service facilities such as electrical and heating equipment, shall be <br /> installed according to Section 6.32.1; <br /> f. Openings to relieve hydrostatic pressure during a flood shall be provided <br /> conforming to subsection 5 of this Section; <br /> g. An accessory structure with any dimension that is twelve feet or less in <br /> height, width, or depth does not require an elevation or flood proofing <br /> certificate. Elevation or flood proofing certifications are required for all <br /> other accessory structures according to Section 14.6(3); and <br /> h. The accessory structure shall meet all zoning and building code requirements. <br /> 9. Additions/Improvements. <br /> a. Additions and/or improvements to pre-FIRM structures whereas the <br /> addition and/or improvements in combination with any interior <br /> modifications to the existing structure are: <br /> i. Not a substantial improvement as defined and does not require a <br /> zoning or building permit, the addition and/or improvements <br /> shall be designed to minimize flood damages and shall not be <br /> any more non-conforming than the existing structure. <br /> ii. Substantial improvement as defined requiring a zoning or <br /> building permit, both the existing structure and the addition <br /> and/or improvements shall comply with the standards for new <br /> construction. <br /> b. Additions to post-FIRM structures with no modifications to the existing <br /> structure shall require only the addition to comply with the standards for <br /> new construction. <br /> c. Additions and/or improvements to post-FIRM structures whereas the <br /> addition and/or improvements in combination with any interior <br /> modifications to the existing structure are: <br /> i. Not a substantial improvement, the addition and/or <br /> improvements only must comply with the standards for new <br /> construction; and, <br /> ii. A substantial improvement, both the existing structure and the <br /> addition and/or improvements must comply with the standards <br /> for new construction. <br />